4 Results
Descriptive Statistics
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The average appraisal of a tree in kamloops is estimated at $15,023 with a 95% CI [$14,513, $15,533] for the population mean. The value of all 16,608 trees is estimated at 250 million Canadian $s. The median is a lot lower at $1,930 since the distribution is positively skewed with a lot of the trees valued at the lower end of the distribution (get 25 and 75 percentiles)
| Descriptive Statistics | Tree condition | DBH | Height | Spread | Appraisal |
| Average | 71.21 | 19.28 | 6.89 | 5.02 | $14,752 |
| Median | 70.00 | 12.00 | 5.00 | 4.00 | 1,860 |
| Mode | 70.00 | 5.00 | 3.00 | 2.00 | 230 |
| Standard deviation | 5.01 | 19.59 | 5.05 | 4.09 | 33,088 |
| Standard error | 0.04 | 0.16 | 0.04 | 0.03 | 269 |
| Minimum | 6.00 | 1.00 | 1.00 | 1.00 | 70 |
| Maximum | 95.00 | 250.00 | 120.00 | 55.00 | 516,800 |
Table 3: Descriptive statistics for 15,102 public urban trees in Kamloops (CAD$222.8 million). DBH, Height and Spread in meters. Tree condition in %.
The highest appraised tree is the Ash Green in Juniper Ridge valued at $516,800 with tree condition at 75%. The highest appraised tree is equivalent to the median value of a townhouse in Kamloops estimated at $510,000 (CREA). The tallest tree is named Lombardy Poplar measured 394 feet and valued at $59,400 is in the City Center zone. At 394 feet, the Lombardy Poplar is as tall as a 35-story building and taller than the Statue of Liberty at approximately 305 feet tall. The tree with the largest DBH is a Ponderosa Pine in the Cambell Creek zone at 98.4 inches. The Ponderosa Pine with a DBH of 98.4 inches is as wide as a standard dining room table. Table 4 summarizes the findings and exact location is given.
| Characteristics | DBH | Height | Spread | Appraisal |
| X | 682391.8309 | 689040.1037 | 689475.5989 | 693687.5591 |
| Y | 5620478.925 | 5615988.624 | 5616385.342 | 5615801.806 |
| Object ID | 6760 | 18313 | 8121 | 1189 |
| Site ID | 9678 | 16070 | 2895 | 1820 |
| Diameter | 250 | 70 | 78 | 220 |
| Height | 39 | 120 | 8 | 8 |
| Spread | 10 | 4 | 55 | 8 |
| Condition | 70 | 70 | 70 | 75 |
| Appraise | 249,800 | 59,400 | 119,300 | 516,800 |
| Tree Common Name | Poplar, Lombardy | Poplar, Lombardy | Arborvitae | Ash, Green |
| Street | 2470 Fleetwood Avenue | 710 Fraser Cresent | 955 Pleasant Street | 2150 Qu’Appelle Blvd |
| Location | Brocklehurst Park | Boulevard | Pleasant Street Cemetery | Juniper Park |
| Zone | Brocklehurst | City Center | City Center | Juniper Ridge |
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| Location | Zone | # of trees | weight | Avg value of a tree | [95% conf. interval] | Total value | |
| Aberdeen | 6AB | 1254 | 8.3 | 4,991 | 4,344 | 5,638 | 6,258,660 |
| Barnhartvale | 8BA | 265 | 1.8 | 14,708 | 11,948 | 17,468 | 3,897,570 |
| Batchelor Heights | 1BH | 230 | 1.5 | 8,479 | 6,674 | 10,284 | 1,950,200 |
| Brocklehurst | 2BR | 747 | 4.9 | 19,878 | 17,090 | 22,666 | 14,848,873 |
| Campbell Creek | 8CA | 33 | 0.2 | 863 | -341 | 2,067 | 28,480 |
| City Centre | 4CC | 2554 | 16.9 | 18,596 | 17,001 | 20,191 | 47,494,107 |
| Dallas | 8DA | 785 | 5.2 | 21,701 | 18,588 | 24,814 | 17,035,112 |
| Heffley Creek | 9HC | 61 | 0.4 | 19,241 | 13,399 | 25,084 | 1,173,710 |
| Juniper Ridge | 7JU | 549 | 3.6 | 10,292 | 7,750 | 12,834 | 5,650,308 |
| Lower Sahali | 4LS | 528 | 3.5 | 14,167 | 12,547 | 15,788 | 7,480,419 |
| McArthur Island Park | 3MI | 865 | 5.7 | 23,122 | 20,669 | 25,576 | 20,000,928 |
| Mission flats | 5MF | 116 | 0.8 | 2,044 | 1,438 | 2,650 | 237,100 |
| Mount Dufferin | 5DU | 392 | 2.6 | 4,367 | 3,669 | 5,066 | 1,712,000 |
| Noble Creek | 1NC | 37 | 0.2 | 4,690 | 2,991 | 6,389 | 173,530 |
| Northshore | 3NK | 909 | 6.0 | 18,089 | 16,079 | 20,098 | 16,442,510 |
| Pineview | 6PV | 388 | 2.6 | 1,284 | 1,017 | 1,552 | 498,350 |
| Rayleigh | 9RA | 149 | 1.0 | 10,258 | 6,927 | 13,589 | 1,528,430 |
| Riverside Park | 4RP | 456 | 3.0 | 39,227 | 33,115 | 45,338 | 17,887,289 |
| Rose Hill | 7RH | 146 | 1.0 | 65,372 | 52,253 | 78,491 | 9,544,350 |
| Southgate | 5SG | 712 | 4.7 | 9,562 | 8,129 | 10,994 | 6,807,790 |
| Tournament Capital Ranch | 9CR | 288 | 1.9 | 283 | 258 | 307 | 81,360 |
| Tranquille | 2TR | 91 | 0.6 | 532 | 377 | 687 | 48,420 |
| TRU | 5TU | 228 | 1.5 | 1,634 | 1,170 | 2,098 | 372,500 |
| Upper Sahali | 5US | 1204 | 8.0 | 11,518 | 10,672 | 12,363 | 13,867,431 |
| Valleyview | 7VV | 708 | 4.7 | 12,740 | 10,541 | 14,940 | 9,020,161 |
| West End | 4WE | 564 | 3.7 | 15,723 | 13,056 | 18,390 | 8,867,699 |
| Westsyde | 1WS | 843 | 5.6 | 11,724 | 10,363 | 13,084 | 9,883,180 |
| Total | 15,102 | 14,752 | 222,790,467 | ||||
